fruits = ['苹果', '香蕉', '橙子']
numbers = [1, 2, 3, 4, 5]
coordinates = (10, 20)

person = {
    'name': '张三',
    'age': 25,
    'city': '北京'
}

unique_numbers = {1, 2, 3, 4, 5}

if person['age'] >= 18:
    print("成年人")
elif person['age'] >= 12:
    print("青少年")
else:
    print("儿童")

# for循环
for i in range(5):
    print(i)

# while循环
count = 0
while count < 5:
    print(count)
    count += 1
